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In my Broken Arrow XP simulation the extended Barrowman method in Open Rocket moves the CP forward quite a bit when a tail cone is added. Is this realistic?
With the tail cone, stability is 0.159 cal:
View attachment 253234
Remove the tail cone leaving everything else unchanged, stability is 0.933 cal:
View attachment 253235
This difference is all due to the CP moving forward. That comes out to 19 additional ounces of nose weight (16 ounces already) just because there is a tail cone, so I am a little skeptical of what the simulation is saying.
With the tail cone, stability is 0.159 cal:
View attachment 253234
Remove the tail cone leaving everything else unchanged, stability is 0.933 cal:
View attachment 253235
This difference is all due to the CP moving forward. That comes out to 19 additional ounces of nose weight (16 ounces already) just because there is a tail cone, so I am a little skeptical of what the simulation is saying.